The general way of checking status and statistics is to use a form of the user mode command show interfaces. Issuing the show interfaces command without any arguments will show information for every interface in a router. This produces more than a terminal screen of information for every interface in a router; this could be a lot of terminal output to wade through to see the very last interface in the router, especially if the router has 30 interfaces

The following show interface command gives full status and statistics of Ethernet  interface 0/0

quik# show interface ethernet 0/0
Interface Ethernet0/0 "Outside", is up, line protocol is up
  Hardware is i82546GB rev03, BW 100 Mbps
        Auto-Duplex(Full-duplex), Auto-Speed(100 Mbps)
        MAC address 001d.a259.700a, MTU 1500
        IP address, subnet mask
        6108932 packets input, 3523575613 bytes, 0 no buffer
        Received 10758 broadcasts, 0 runts, 0 giants
        0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
        0 L2 decode drops
        5839207 packets output, 1930255039 bytes, 0 underruns
        0 output errors, 0 collisions, 0 interface resets
        0 late collisions, 0 deferred
        0 input reset drops, 0 output reset drops
        input queue (curr/max packets): hardware (0/25)
        output queue (curr/max packets): hardware (0/25)
  Traffic Statistics for "Outside":
        6108901 packets input, 3410311517 bytes
        5839207 packets output, 1816804801 bytes
        161363 packets dropped
      1 minute input rate 34 pkts/sec,  20168 bytes/sec
      1 minute output rate 33 pkts/sec,  6231 bytes/sec
      1 minute drop rate, 0 pkts/sec
      5 minute input rate 29 pkts/sec,  18119 bytes/sec
      5 minute output rate 29 pkts/sec,  5315 bytes/sec
      5 minute drop rate, 0 pkts/sec

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